.bigdv
{
    width: 800px;
    height: 700px;
    border: 1px solid black;
    margin: 0 auto
}

textarea
{
    width: 500px;
    height: 300px;
    margin-left: 150px;
    margin-top: 30px;
    font-size: 20px;
}

img
{
    width: 100px;
    height: 100px;
    margin-left: 150px;
}